Function primitive_box_methods

src/native.rs:783–814

(jni_env: *mut JNIEnv)

}

unsafe fn primitive_box_methods(jni_env: *mut JNIEnv) -> Result<PrimitiveBoxMethods, String> {
    static mut PRIM_BOX_METHS: *const Result<PrimitiveBoxMethods, String> = 0 as *const Result<PrimitiveBoxMethods, String>;
    static ONCE: Once = ONCE_INIT;
    ONCE.call_once(|| {
        unsafe fn method_ref(jni_env: *mut JNIEnv, class_name: &str, method_desc: &str) -> Result<MethodRef, String> {
            let class_name_str = CString::new(class_name).unwrap();
            let class = util::result_or_jni_ex((**jni_env).FindClass.unwrap()(jni_env,
                                                                              class_name_str.as_ptr()), jni_env)?;
            let meth_name_str = CString::new("valueOf").unwrap();
            let desc_str = CString::new(method_desc).unwrap();
            let method = util::result_or_jni_ex((**jni_env).GetStaticMethodID.unwrap()(jni_env,
                                                                                       class,
                                                                                       meth_name_str.as_ptr(),
                                                                                       desc_str.as_ptr()), jni_env)?;
            return Result::Ok((class, method));
        }
        unsafe fn prim_box_meths(jni_env: *mut JNIEnv) -> Result<PrimitiveBoxMethods, String> {
            return Result::Ok(PrimitiveBoxMethods {
                boolean: method_ref(jni_env, "java/lang/Boolean", "(Z)Ljava/lang/Boolean;")?,
                byte: method_ref(jni_env, "java/lang/Byte", "(B)Ljava/lang/Byte;")?,
                char: method_ref(jni_env, "java/lang/Character", "(C)Ljava/lang/Character;")?,
                short: method_ref(jni_env, "java/lang/Short", "(S)Ljava/lang/Short;")?,
                int: method_ref(jni_env, "java/lang/Integer", "(I)Ljava/lang/Integer;")?,
                long: method_ref(jni_env, "java/lang/Long", "(J)Ljava/lang/Long;")?,
                float: method_ref(jni_env, "java/lang/Float", "(F)Ljava/lang/Float;")?,
                double: method_ref(jni_env, "java/lang/Double", "(D)Ljava/lang/Double;")?,
            });
        }
        PRIM_BOX_METHS = mem::transmute(Box::new(prim_box_meths(jni_env)));
    });
    return ptr::read(PRIM_BOX_METHS);
}